Change MessagePumpLibevent::Run to handle IO events before doing idle

third_party/libevent/event.c

Index: third_party/libevent/event.c
===================================================================
--- third_party/libevent/event.c	(revision 90439)
+++ third_party/libevent/event.c	(working copy)
@@ -469,6 +469,7 @@
 	struct timeval tv;
 	struct timeval *tv_p;
 	int res, done;
+	int processed_active = 0;
 
 	/* clear time cache */
 	base->tv_cache.tv_sec = 0;
@@ -523,6 +524,7 @@
 
 		if (base->event_count_active) {
 			event_process_active(base);
+			processed_active = 1;
 			if (!base->event_count_active && (flags & EVLOOP_ONCE))
 				done = 1;
 		} else if (flags & EVLOOP_NONBLOCK)
@@ -533,7 +535,7 @@
 	base->tv_cache.tv_sec = 0;
 
 	event_debug(("%s: asked to terminate loop.", __func__));
-	return (0);
+	return (processed_active ? 2 : 0);

[wtc, 2011/06/25 00:39:45]

The return value 0 means success.  1 means no events are
registered.  So I need to use 2 for the new meaning.
I'll find a better solution.

 }
 
 /* Sets up an event for processing once */